Welcome to GIS Ag Maps. The website was established in 2011 and includes GIS and remote sensing information for different applications, with a focus on crop agriculture. An emphasis is on Landsat and Sentinel-2 satellite imagery, LiDAR-based elevation data, yield monitor data, as well as free GIS software that can be used for Ag or non-Ag purposes.

Custom GIS data downloads are available and are designed to be viewed in free Quantum GIS but files will open in other GIS software, such as ArcGIS. The downloads (and Quantum GIS) can be accessed to the left and are a way to learn about and work with Landsat imagery as well as LiDAR-based elevation data and derived layers.

Landsat and Sentinel-2 have nearly global coverage. Different Landsat and Sentinel-2 applications are described above and to the left. In regards to crop information on the website, Landsat is mainly applied to corn and soybeans but the uses shown can apply to other crops.

LiDAR elevation data are available from different sources. The USGS has acquired LiDAR for areas in the USA and made the data available for free as 1/9 arc-second (approximately 3-meter resolution) or 1 meter resolution (current work) raster products. When applying elevation data for any purpose, it is important to realize there is error associated with elevation values and derived layers, such as slope angle. Details about accuracy are included in the GIS Slope Angle & Accuracy folder in the Other section on the left menu.

Yield monitor data contain important information but also have inherent errors that should be removed; data can be processed into maps that can be usefully analyzed and applied.

For questions, comments, or information about custom products please access the Contact page.